Björk says she is 100% Icelandic. Both of her parents are Icelandic. Icelandics are a mix between Nordics and Gaelics. Those are both North European, pure Caucasian groups. OK, so how come she looks Asiatic?
That’s not the only photo of her. Lapps are the most ancient Caucasians of Europe. They do have a bit of Asian in them, but not much (7%). Surely some Scandinavians have some Lapp in them, but probably not much.
I much better guess is that Björk is part Inuit from Greenland. Iceland is very close to the Inuit-populated land of Greenland, with close ties to other Inuit regions in Canada. She’s obviously got some Inuit genes somewhere in her background.
I have heard some say that some far north Scandinavians have Asiatic eyes though they are fully Caucasian due to protective effects eyefolds have on the eyes from the glare of the sun shining on the snow. I think that’s dubious until proven otherwise. Most Norwegians and Swedes don’t look very Asiatic.
Best guess is she has an Inuit ancestor back there somewhere.
Anyway, as far as I am concerned she’s White.